be7f06bbe7
`CoordinateSystem` differed from `Field` in that its `GetData` method returned an `ArrayHandleVirtualCoordinates` instead of a `VariantArrayHandle`. This is probably confusing since `CoordianteSystem` inherits `Field` and has a pretty dramatic difference in this behavior. In preparation to deprecate `ArrayHandleVirtualCoordinates`, this changes `CoordiantSystem` to be much more like `Field`. (In the future, we may change the `CoordinateSystem` to point to a `Field` rather than be a special `Field`.) A method named `GetDataAsMultiplexer` has been added to `CoordinateSystem`. This method allows you to get data from `CoordinateSystem` as a single array type without worrying about creating functors to handle different types and without needing virtual methods.
128 lines
5.0 KiB
C++
128 lines
5.0 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
|
|
#include <vtkm/cont/Algorithm.h>
|
|
#include <vtkm/cont/ArrayHandleConcatenate.h>
|
|
#include <vtkm/cont/CellLocatorBoundingIntervalHierarchy.h>
|
|
#include <vtkm/cont/DataSetBuilderUniform.h>
|
|
#include <vtkm/cont/Invoker.h>
|
|
#include <vtkm/cont/Timer.h>
|
|
#include <vtkm/cont/testing/Testing.h>
|
|
#include <vtkm/exec/CellInterpolate.h>
|
|
#include <vtkm/exec/ParametricCoordinates.h>
|
|
#include <vtkm/io/VTKDataSetReader.h>
|
|
|
|
namespace
|
|
{
|
|
struct CellCentroidCalculator : public vtkm::worklet::WorkletVisitCellsWithPoints
|
|
{
|
|
using ControlSignature = void(CellSetIn, FieldInPoint, FieldOut);
|
|
using ExecutionSignature = void(_1, PointCount, _2, _3);
|
|
|
|
template <typename CellShape, typename InputPointField>
|
|
VTKM_EXEC void operator()(CellShape shape,
|
|
vtkm::IdComponent numPoints,
|
|
const InputPointField& inputPointField,
|
|
typename InputPointField::ComponentType& outputField) const
|
|
{
|
|
vtkm::Vec3f parametricCenter;
|
|
vtkm::exec::ParametricCoordinatesCenter(numPoints, shape, parametricCenter);
|
|
vtkm::exec::CellInterpolate(inputPointField, parametricCenter, shape, outputField);
|
|
}
|
|
}; // struct CellCentroidCalculator
|
|
|
|
struct BoundingIntervalHierarchyTester : public vtkm::worklet::WorkletMapField
|
|
{
|
|
typedef void ControlSignature(FieldIn, ExecObject, FieldIn, FieldOut);
|
|
typedef _4 ExecutionSignature(_1, _2, _3);
|
|
|
|
template <typename Point, typename BoundingIntervalHierarchyExecObject>
|
|
VTKM_EXEC vtkm::IdComponent operator()(const Point& point,
|
|
const BoundingIntervalHierarchyExecObject& bih,
|
|
const vtkm::Id expectedId) const
|
|
{
|
|
vtkm::Vec3f parametric;
|
|
vtkm::Id cellId;
|
|
bih->FindCell(point, cellId, parametric);
|
|
return (1 - static_cast<vtkm::IdComponent>(expectedId == cellId));
|
|
}
|
|
}; // struct BoundingIntervalHierarchyTester
|
|
|
|
vtkm::cont::DataSet ConstructDataSet(vtkm::Id size)
|
|
{
|
|
return vtkm::cont::DataSetBuilderUniform().Create(vtkm::Id3(size, size, size));
|
|
}
|
|
|
|
void TestBoundingIntervalHierarchy(vtkm::cont::DataSet dataSet, vtkm::IdComponent numPlanes)
|
|
{
|
|
using Timer = vtkm::cont::Timer;
|
|
|
|
vtkm::cont::DynamicCellSet cellSet = dataSet.GetCellSet();
|
|
auto vertices = dataSet.GetCoordinateSystem().GetDataAsMultiplexer();
|
|
|
|
std::cout << "Using numPlanes: " << numPlanes << "\n";
|
|
std::cout << "Building Bounding Interval Hierarchy Tree" << std::endl;
|
|
vtkm::cont::CellLocatorBoundingIntervalHierarchy bih =
|
|
vtkm::cont::CellLocatorBoundingIntervalHierarchy(numPlanes, 5);
|
|
bih.SetCellSet(cellSet);
|
|
bih.SetCoordinates(dataSet.GetCoordinateSystem());
|
|
bih.Update();
|
|
std::cout << "Built Bounding Interval Hierarchy Tree" << std::endl;
|
|
|
|
Timer centroidsTimer;
|
|
centroidsTimer.Start();
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> centroids;
|
|
vtkm::worklet::DispatcherMapTopology<CellCentroidCalculator>().Invoke(
|
|
cellSet, vertices, centroids);
|
|
centroidsTimer.Stop();
|
|
std::cout << "Centroids calculation time: " << centroidsTimer.GetElapsedTime() << "\n";
|
|
|
|
vtkm::cont::ArrayHandleCounting<vtkm::Id> expectedCellIds(0, 1, cellSet.GetNumberOfCells());
|
|
|
|
Timer interpolationTimer;
|
|
interpolationTimer.Start();
|
|
vtkm::cont::ArrayHandle<vtkm::IdComponent> results;
|
|
|
|
vtkm::worklet::DispatcherMapField<BoundingIntervalHierarchyTester>().Invoke(
|
|
centroids, bih, expectedCellIds, results);
|
|
|
|
vtkm::Id numDiffs = vtkm::cont::Algorithm::Reduce(results, 0, vtkm::Add());
|
|
interpolationTimer.Stop();
|
|
vtkm::Float64 timeDiff = interpolationTimer.GetElapsedTime();
|
|
std::cout << "No of interpolations: " << results.GetNumberOfValues() << "\n";
|
|
std::cout << "Interpolation time: " << timeDiff << "\n";
|
|
std::cout << "Average interpolation rate: "
|
|
<< (static_cast<vtkm::Float64>(results.GetNumberOfValues()) / timeDiff) << "\n";
|
|
std::cout << "No of diffs: " << numDiffs << "\n";
|
|
VTKM_TEST_ASSERT(numDiffs == 0, "Calculated cell Ids not the same as expected cell Ids");
|
|
}
|
|
|
|
void RunTest()
|
|
{
|
|
//If this test is run on a machine that already has heavy
|
|
//cpu usage it will fail, so we limit the number of threads
|
|
//to avoid the test timing out
|
|
#ifdef VTKM_ENABLE_OPENMP
|
|
omp_set_num_threads(std::min(4, omp_get_max_threads()));
|
|
#endif
|
|
|
|
TestBoundingIntervalHierarchy(ConstructDataSet(16), 3);
|
|
TestBoundingIntervalHierarchy(ConstructDataSet(16), 4);
|
|
TestBoundingIntervalHierarchy(ConstructDataSet(16), 6);
|
|
TestBoundingIntervalHierarchy(ConstructDataSet(16), 9);
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
int UnitTestBoundingIntervalHierarchy(int argc, char* argv[])
|
|
{
|
|
return vtkm::cont::testing::Testing::Run(RunTest, argc, argv);
|
|
}
|